Open Source C Graphic Design Software

Reference library for supporting the Portable Network Graphics (PNG) format.

Tux Paint is a free, award-winning drawing program originally created for children ages 3 to 12, but enjoyed by all! It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program. You're presented with a blank canvas and a variety of drawing tools to help them be creative. Along with paintbrush, shapes and text, Tux Paint includes a "stamp" feature to add pre-drawn or photographic imagery to pictures, and a set of "magic tools" that provide filter effects (like blur, tint and waves) and interesting drawing tools (like train tracks, bubbles and grass). Tux Paint includes a collection of "starter" images, both coloring-book style and photo-realistic, and a large collections of stamps are available as a separate download. Additional content can be added by parents & teachers, or downloaded from 3rd parties. Tux Paint is available for Windows, macOS, Android, Linux, & Haiku operating systems, among others.

Dia Diagram Editor is free Open Source drawing software for Windows, Mac OS X and Linux. Dia supports more than 30 different diagram types like flowcharts, network diagrams, database models. More than a thousand readymade objects help to draw professional diagrams. Dia can read and write a number of different raster and vector image formats. Software developers and database specialists can use Dia as a CASE tool to generate code skeletons from their drawings. Dia can be scripted and extended using Python.

The Animated Portable Network Graphics (APNG) is an unofficial extension of the Portable Network Graphics (PNG) format. APNG patch provides APNG support to libpng. APNG support was merged! https://github.com/pnggroup/libpng/pull/706

GraphicsMagick provides a set of commandline tools and programming APIs for manipulating, editing, and converting raster and vector images. It is derived from ImageMagick, with the objective of providing better stability and performance than ImageMagick while retaining the original MIT/X11 license.

gPhoto is a program and library framework that lets users download pictures from their digital cameras. The libgphoto2 library gives you access to hundreds of models of digital cameras on several platforms. GIT repo and Issue tracker lives at https://github.com/gphoto/ these days.

A very high quality package of printer drivers for CUPS on Linux and other POSIX-compliant operating systems. This project also maintains an enhanced Print plug-in for GIMP 2.x from the same code base.

FreeImage is a library project for developers who would like to support popular graphics image formats (PNG, JPEG, TIFF, BMP and others). Some highlights are: extremely simple in use, not limited to the local PC (unique FreeImageIO) and Plugin driven!

A whole bunch of utilities for primitive manipulation of graphic images. Wide array of converters from one graphics format to another. E.g. from g3 fax format to jpeg. Many basic graphics editing tools such as magnifying and cropping.

Developer's Image Library (DevIL) is a cross-platform image library utilizing a simple syntax to load, save, convert, manipulate, filter and display a variety of images with ease.

XTrackCAD is a open-source, free, CAD program for designing model railroad layouts. You can easily create layout of any scale or size. Libraries for many brands, scales and gauges of track and turnouts/points and model structures are included. Adding new components is easy with the built-in editor. It runs on Windows, Mac and Linux,

Xournal is a GTK+/Gnome application for notetaking, sketching, keeping a journal using a stylus on Tablet PCs and other platforms. It aims to provide superior graphical quality (subpixel resolution) and overall functionality.

darktable is an open source photography workflow application and non-destructive raw developer. A virtual lighttable and darkroom for photographers. It manages your digital negatives in a database, lets you view them through a zoomable lighttable and enables you to develop raw images, enhance them and export them on local or remote storage.

The UFRaw (Unidentified Flying Raw) is a tool for reading and manipulating raw images from digital cameras. It supports most of the existing raw formats (any format supported by DCRaw). UFRaw can be used on its own or as a Gimp plug-in.

This is a collection of voxel tools. It includes a voxel editor with animation support and loading/saving into a lot of voxel volume formats. There are other tools e.g. a thumbnail for your file manager and a command line tool to convert or modify between several voxel formats. Use a voxel editor or to convert your voxel models into an obj or ply file. If you came here as a developer, make sure to check out the dependencies and set up your development environment. The build scripts are cmake-based, so make sure to have it installed and generate the project files for your desired ide. After setting up everything, make sure to check out the compilation guide.

ImageMagick® is a free and open-source software suite for displaying, converting, and editing raster image and vector image files. It can read and write over 200 image file formats, and can support a wide range of image manipulation operations, such as resizing, cropping, and color correction. ImageMagick is written in C and is available for a wide range of operating systems, including Linux, macOS, and Windows. It can be used as a standalone application, or as a library that can be integrated into other software programs. Overall, ImageMagick is a powerful and versatile software suite for displaying, converting, and editing image files. Its support for scripting and automation, along with its other features, make it a valuable tool for a wide range of image-related tasks.

Pix is an image management application with image viewing, browsing, organizing and editing capabilities. It is part of the X-Apps project, which aims at producing cross-distribution and cross-desktop software. Pix supports numerous image types including: BMP, JPEG, GIF, PNG, TIFF, TGA, ICO and XPM; with optional support for RAW and HDR (high dynamic range) images. It is also able to view EXIF data attached to JPEG images. Pix has its own set of image editing tools that enable you to make color, hue, saturation, lightness and contrast adjustments, as well as a number of advanced tools such as slide shows, converting image format and more.

NOTE: FontForge has moved to fontforge.github.io, newer binaries and sources are available at github.com/fontforge. FontForge allows you to edit outline and bitmap fonts. You may create new ones or modify old ones. It is also a format converter and can interconvert between PostScript (ascii & binary Type1, some Type3, some Type0), TrueType, OpenType (Type2), CID, SVG

mtPaint is a painting program designed for creating icons and pixel-based artwork. It can edit indexed palette or 24 bit RGB images and offers painting, palette, and image manipulation tools.

Aewan is a multi-layered ascii-art/animation editor that produces both stand-alone cat-able art files and an easy-to-parse format for integration in your terminal applications.

Darktable is a virtual lighttable and darkroom for photographers: it manages your digital negatives in a database and lets you view them through a zoomable light table. It also enables you to develop raw images and enhance them.

Takes standard printer output produced by a DOS application, and forwards it to a default or selected Windows printer. Converts code page, strips empty pages, supports BOX DRAWINGS chars. Works on all Windows platforms. Written in Borland DELPHI.

See https://www.openorienteering.org/apps/mapper/

The aim of this project is to compile up-to-date Windows builds of FontForge. For 'stable' builds, see https://github.com/fontforge/fontforge/releases The build system used was based off that offered by Matthew Petroff (http://www.mpetroff.net/software/fontforge-windows/), but has since been practically rewritten. New in 11/07/2020: * Synced with the 20201107 release. New in 06/04/2020: * Updated to latest master, picks up a clipboard copying fix New in 14/03/2020: * Synced with the 20200314 release. New in 01/03/2020: * Updated to latest master, now built with CMake. (prerelease) New in 02/06/2019: * The 32-bit build now uses Python 3 (3.7) instead of Python 2. No further Python 2 builds will be provided. * The GDK3 backend is now used. VcXsrv is no longer bundled. New in 31/07/2017: KNOWN ISSUES: * CTRL-C from console no longer interrupts/stops FontForge

Sodipodi is general vector illustrating application for Linux/Unix and Windows. It uses W3C SVG as native file and in-memory image format and can do many neat things.